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Which version of Python do I have installed?
... Note: The interpreter may not use the same Python version as the one that runs your scripts. I think there's some circumstances where, by default, your interpreter is Python 3, but your scripts are run in Python 2 (need #!python3 as the first line).
– leewz
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Equivalent of varchar(max) in MySQL?
...h this is that if you create a column of that size, you can only have that one column in your table. The MAX row size in MySql is 64k, so if you have a 64k column, that's all you get. This same constraint does not apply to Sql Server's varchar(max) column type.
– joshperry
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What is the difference between LR, SLR, and LALR parsers?
...ts with the same token T. If the parser is an SLR parser, there is at most one reduction rule for the state and so the reduction action can be done blindly without searching to see which reduction applies. It is useful for an SLR parser to know if there is a reduction or not; this is easy to tell ...
Git Push Error: insufficient permission for adding an object to repository database
...d -R g+rwX .
find . -type d -exec chmod g+s '{}' +
Note if you want everyone to be able to modify the repository, you don't need the chgrp and you will want to change the chmod to sudo chmod -R a+rwX .
If you do not fix the underlying cause, the error will keep coming back and you'll have to keep...
What do single quotes do in C++ when used on multiple characters?
...acter literals
(...) An ordinary character literal that contains more than
one c-char is a multicharacter literal . A multicharacter literal has type int and implementation-defined
value.
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Is there a way to 'uniq' by column?
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If you want to retain the last one of the duplicates you could use
tac a.csv | sort -u -t, -r -k1,1 |tac
Which was my requirement
here
tac will reverse the file line by line
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Optimal number of threads per core
...t number of threads until you find the right number for your application.
One thing for sure: 4k threads will take longer. That's a lot of context switches.
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How to debug Visual Studio extensions
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thank you for this answer, solved an issue in one hit. Much obliged!
– Richard Griffiths
Dec 28 '13 at 12:02
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Media Queries: How to target desktop, tablet, and mobile?
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IMO these are the best breakpoints:
@media (min-width:320px) { /* smartphones, portrait iPhone, portrait 480x320 phones (Android) */ }
@media (min-width:480px) { /* smartphones, Android phones, landscape iPhone */ }
@media (min-width:600px) { /* portrait tablets, portrait iPad, e-readers (Nook/K...
How to select between brackets (or quotes or …) in Vim?
...loser to the useful stuff... you could at least mention some of the common ones, like a" and a( when in visual mode.
– Stobor
Jun 30 '09 at 6:22
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